A positioning device for a mold

Abstract

The utility model provides a kind of positioning device of mould, belong to mould manufacturing technical field, the positioning device of this mould includes positioning seat body, positioning column, adjusting mechanism, locking mechanism and guiding mechanism;Positioning seat body is hollow cylinder, bottom is equipped with bottom surface, and circular through-hole is opened in the center of bottom surface;Stepped positioning column is composed of lower section cylinder and the upper section cylinder of greater diameter;Adjusting mechanism contains adjusting seat and adjusting screw rod, adjusting seat is fixed in seat body side wall, adjusting screw rod passes through adjusting seat and extends into seat body interior, and its end abuts on the side wall of upper section cylinder to adjust height;Locking mechanism is composed of locking bolt and locking block, locking block is placed in seat body, locking bolt is connected with locking block by thread in radial through seat body side wall, and locking block inner arc surface and upper section cylinder outer wall are pasted to realize lock solid;Guiding mechanism contains guide sleeve and guide rod, guide sleeve is fixed in seat body top end, guide rod passes through guide sleeve and is fixedly connected with the top end of upper section cylinder, and it is ensured that column lifting direction is accurate and unbiased.

Description

Technical Field

[0001] This utility model belongs to the field of mold manufacturing technology, and more specifically, relates to a mold positioning device. Background Technology

[0002] In modern manufacturing, molds, as key tools for product forming, directly impact product quality and production efficiency. Precision positioning devices for molds are core technological equipment in mold manufacturing and use, ensuring precise positioning and reliable fixation of mold components. Traditional mold positioning devices primarily employ simple positioning pins and blocks, achieving positioning through mechanical cooperation. However, this structure suffers from low positioning accuracy, difficulty in adjustment, and insufficient locking reliability. With ever-increasing product precision requirements, traditional positioning devices can no longer meet the demands of modern mold manufacturing. Existing positioning devices generally suffer from the following problems: positioning accuracy is limited by machining precision, making fine adjustments difficult; locking mechanisms use simple bolt connections, resulting in uneven locking force distribution and easy deformation; unreasonable guide mechanism design leads to low motion accuracy and a tendency to jam; and the overall structure is complex, difficult to manufacture, and costly. Existing solutions mainly include improving machining accuracy, using hydraulic locking, and employing pneumatic adjustment, but these solutions suffer from high costs, complex structures, and difficult maintenance, hindering their widespread application in actual production. Utility Model Content

[0003] In view of this, the present invention provides a positioning device for a mold, which can solve the technical problems of unstable positioning accuracy, difficulty in adjustment, and insufficient locking reliability in the high-precision positioning process of existing mold positioning devices.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a positioning device for a mold, comprising: a positioning base, a positioning post, an adjusting mechanism, a locking mechanism, and a guiding mechanism; the positioning base is a hollow cylindrical structure with a bottom surface and a circular through hole on the bottom surface, through which the positioning post is slidably connected to the positioning base; the positioning post is a stepped cylindrical structure, comprising an upper post and a lower post, the diameter of the upper post being larger than the diameter of the lower post, forming a stepped surface between the upper and lower posts; the adjusting mechanism includes an adjusting screw and an adjusting seat, the adjusting seat... The adjusting screw is fixedly mounted on the side wall of the positioning base. It passes through the adjusting base and extends into the interior of the positioning base. The end of the adjusting screw abuts against the side wall of the upper section of the positioning column. The locking mechanism includes a locking bolt and a locking block. The locking block is located inside the positioning base. The locking bolt passes through the side wall of the positioning base and is threadedly connected to the locking block. The inner side of the locking block fits against the outer wall of the upper section of the positioning column. The guiding mechanism includes a guide sleeve and a guide rod. The guide sleeve is fixedly mounted on the top of the positioning base. The guide rod passes through the guide sleeve and is fixedly connected to the top of the upper section of the positioning column.

[0006] The technical advantages of the mold positioning device provided by this utility model are as follows: Through the coordinated operation of the positioning base, positioning column, adjusting mechanism, locking mechanism, and guiding mechanism, the precise positioning function of the mold is achieved. The stepped structure of the positioning column, in conjunction with the positioning base, provides a stable positioning reference. The adjusting mechanism achieves micro-displacement control through the precise adjustment of the adjusting screw. The locking mechanism achieves reliable locking and fixing through the wedge-shaped structure of the locking block. The guiding mechanism ensures the linearity and accuracy of the movement through the cooperation of the guide sleeve and the guide rod. The overall structure is compact and reasonable, with high positioning accuracy and convenient operation, meeting the stringent requirements for precise positioning in mold manufacturing.

[0007] Based on the above technical solution, the positioning device for a mold of this utility model can be further improved as follows:

[0008] The positioning base has four circumferentially distributed positioning bosses on its outer wall, each with a threaded hole. The height of the positioning bosses is 5 mm to 15 mm, and the diameter of the positioning bosses is 0.3 to 0.5 times the outer diameter of the positioning base. The inner wall of the positioning base has a cylindrical guide groove that mates with the upper section of the positioning column. The depth of the guide groove is 2 mm to 8 mm.

[0009] The beneficial effects of adopting the above-mentioned improved scheme are as follows: By setting evenly distributed circumferentially distributed positioning bosses on the outer wall of the positioning seat, a standardized installation interface is provided for the connection between the device and the mold. The height and diameter of the positioning bosses are set within a specific range, ensuring the stability and standardization of the connection. The cylindrical guide groove on the inner wall of the positioning seat forms a precise fit with the upper section of the positioning column, improving the accuracy and repeatability of positioning. The depth of the guide groove is controlled within a reasonable range, ensuring both the guiding effect and avoiding assembly difficulties caused by excessive constraints.

[0010] Furthermore, the upper section of the positioning post is provided with at least three longitudinal guide grooves that are evenly spaced in a circle. The depth of the longitudinal guide grooves is 1 mm to 3 mm, and the width of the longitudinal guide grooves is 2 mm to 6 mm. The lower section of the positioning post is provided with a spiral positioning pattern on its surface. The pitch of the positioning pattern is 0.5 mm to 2 mm, and the depth of the positioning pattern is 0.1 mm to 0.5 mm.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The longitudinal guide groove design of the upper section of the positioning column enhances the stability of the fit with the inner wall of the positioning base; the evenly spaced guide groove structure improves the load-bearing capacity and guiding accuracy; and the depth and width of the grooves are set within a reasonable range to ensure good guiding effect. The spiral positioning texture of the lower section of the column increases the friction with the positioned part and the positioning reliability. The pitch and depth of the spiral texture are controlled within a precise range, which not only ensures the positioning effect but also avoids excessive wear, thereby improving the service life and positioning accuracy of the device.

[0012] Furthermore, the adjusting screw of the adjusting mechanism is a precision screw with a pitch of 0.5 mm. The adjusting screw is made of 45 steel and has undergone quenching treatment. The adjusting seat is made of bronze. The inner wall of the adjusting seat is provided with threaded holes that cooperate with the adjusting screw. The adjusting seat is fixedly connected to the side wall of the positioning seat by 4 bolts, which are arranged in a rectangular pattern.

[0013] The beneficial effects of adopting the above-mentioned improved scheme are as follows: Using a precision screw as the adjusting screw, the 0.5 mm pitch design enables high-precision micro-adjustment; the 45# steel material, after quenching treatment, possesses good hardness and wear resistance, ensuring long-term precision stability. The bronze adjusting seat has good wear resistance and self-lubricating properties, forming a good friction pair with the steel screw; the rectangular distribution of four bolts provides sufficient connection strength and stability, ensuring the reliability and durability of the adjusting mechanism during high-precision adjustment.

[0014] Furthermore, the locking block of the locking mechanism has a wedge-shaped structure with a wedge angle of 30 to 60 degrees, and the material of the locking block is aluminum alloy; the head of the locking bolt is provided with a hexagonal operating part, and the locking bolt and the locking block are connected by an M8 thread, and the locking bolt is sealed by a rubber sealing ring when it passes through the side wall of the positioning seat.

[0015] The beneficial effects of adopting the above-mentioned improved scheme are as follows: The wedge-shaped structure design of the locking block utilizes the self-locking principle of a wedge, and the wedge angle range of 30 to 60 degrees ensures good self-locking performance and locking force transmission efficiency. The aluminum alloy locking block is lightweight and high-strength, reducing the overall weight of the device. The hexagonal operating part of the locking bolt head facilitates operation with standard tools, the M8 threaded connection provides sufficient locking force, and the rubber sealing ring prevents dirt from entering, improving the device's sealing performance and adaptability to the operating environment.

[0016] Furthermore, the guide sleeve of the guide mechanism has a cylindrical structure, and the inner diameter of the guide sleeve is 0.02 mm to 0.05 mm larger than the outer diameter of the guide rod. The guide sleeve is made of stainless steel. The surface of the guide rod is chrome-plated, and the guide rod is connected to the top of the upper section of the positioning column by a thread. An anti-loosening washer is provided at the connection.

[0017] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the cylindrical structure of the guide sleeve forms a precise sliding fit with the guide rod; the fit clearance design of 0.02 mm to 0.05 mm ensures good guiding accuracy while avoiding increased frictional resistance caused by excessive tightness; the stainless steel guide sleeve has good corrosion resistance and wear resistance; the chrome plating treatment on the surface of the guide rod improves surface hardness and wear resistance, reduces the coefficient of friction; the threaded connection ensures the reliability of the connection; and the anti-loosening washer prevents the connection from loosening, thus improving the stability and service life of the device.

[0018] Furthermore, the bottom surface of the positioning base is provided with an annular groove, the depth of which is 2 mm to 5 mm and the width of which is 3 mm to 8 mm.

[0019] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the annular groove design on the bottom surface of the positioning base enhances the stability of the fit with the mounting base. The depth and width of the groove are set within a reasonable range, ensuring both positioning effect and ease of manufacturing. The annular groove structure can effectively limit the radial displacement of the device on the mounting base, improving installation accuracy and stability. At the same time, the groove design also has a certain chip-retaining function, which can accommodate small particles generated during installation and avoid affecting positioning accuracy.

[0020] Furthermore, the step surface of the positioning post is conical, and the cone angle of the conical step surface is 45 degrees to 75 degrees.

[0021] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the conical design of the positioning post's stepped surface improves the fit performance with the interior of the positioning base; the cone angle range of 45 to 75 degrees ensures good guiding effect and positioning accuracy; the conical structure has a self-centering function, which can automatically adjust its position during assembly, reducing assembly errors. The conical stepped surface design also increases the bearing area, improves the load-bearing capacity and positioning stability, and at the same time, the conical structure is easy to process and manufacture, reducing manufacturing costs.

[0022] Furthermore, the outer surface of the adjustment seat is provided with heat dissipation fins, which are radially distributed and number 6 to 12.

[0023] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the heat dissipation fin design on the outer surface of the adjusting seat enhances the heat dissipation effect; the radially distributed fin structure increases the heat dissipation area and improves heat dissipation efficiency; and the number of 6 to 12 fins is set within a reasonable range, ensuring both heat dissipation effect and avoiding excessive structural complexity. Good heat dissipation performance can effectively control the temperature rise of the adjusting mechanism during long-term operation, maintain the stability of the adjusting accuracy, extend the service life of the device, and improve operational reliability.

[0024] Furthermore, the outer wall of the guide sleeve is provided with a positioning keyway, the depth of which is 1 mm to 3 mm and the width of which is 4 mm to 8 mm.

[0025] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the positioning keyway design on the outer wall of the guide sleeve enhances the connection stability with the external structure. The depth and width of the keyway are set within a reasonable range, ensuring both connection strength and ease of manufacturing. The positioning keyway structure can effectively prevent the guide sleeve from rotating during operation, improving guiding accuracy and positioning stability. At the same time, the keyway design also facilitates the quick installation and disassembly of the device, improving the convenience of maintenance and work efficiency.

[0026] Compared with existing technologies, the advantages of the mold positioning device provided by this utility model are as follows: This utility model effectively solves the technical problems existing in existing mold positioning devices by designing a coordinated combination of a positioning base, positioning column, adjusting mechanism, locking mechanism, and guiding mechanism. The stepped structure of the positioning column and its precise fit with the positioning base provide a stable positioning reference. The adjusting mechanism uses a precision screw to achieve micro-adjustment, the locking mechanism uses a wedge-shaped locking block to achieve reliable locking, and the guiding mechanism ensures the linearity and accuracy of the movement. The overall structure is reasonably designed, the materials of each component are appropriately selected, processing and manufacturing are convenient, operation is simple, the positioning accuracy is up to the micrometer level, the repeatability of positioning is stable, the locking reliability is strong, the service life is long, and maintenance is convenient. It can meet the strict requirements of modern mold manufacturing for high-precision positioning, significantly improving mold processing quality and production efficiency. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a positioning device for a mold;

[0029] Figure 2 A cross-sectional view of a positioning device for a mold;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Positioning seat; 2. Positioning column; 3. Adjustment mechanism; 31. Adjustment screw; 32. Adjustment seat; 4. Locking mechanism; 41. Locking bolt; 42. Locking block; 5. Guide mechanism; 51. Guide sleeve; 52. Guide rod; 6. Positioning boss. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] like Figure 1 , Figure 2The diagram shows a first embodiment of a positioning device for a mold provided by this utility model. In this embodiment, it includes: a positioning base 1, a positioning post 2, an adjusting mechanism 3, a locking mechanism 4, and a guiding mechanism 5. The positioning base 1 is a hollow cylindrical structure with a bottom surface and a circular through hole. The positioning post 2 is slidably connected to the positioning base 1 through the circular through hole. The positioning post 2 is a stepped cylindrical structure, comprising an upper post and a lower post. The diameter of the upper post is larger than the diameter of the lower post, forming a stepped surface between the upper and lower posts. The adjusting mechanism 3 includes an adjusting screw 31 and an adjusting seat 32, with the adjusting seat 32 fixedly mounted... The adjusting screw 31 is placed on the side wall of the positioning base 1, passes through the adjusting seat 32 and extends into the interior of the positioning base 1, and the end of the adjusting screw 31 abuts against the side wall of the upper section of the positioning column 2; the locking mechanism 4 includes a locking bolt 41 and a locking block 42, the locking block 42 is disposed inside the positioning base 1, the locking bolt 41 passes through the side wall of the positioning base 1 and is threadedly connected to the locking block 42, and the inner side of the locking block 42 is in contact with the outer wall of the upper section of the positioning column 2; the guiding mechanism 5 includes a guide sleeve 51 and a guide rod 52, the guide sleeve 51 is fixedly disposed on the top of the positioning base 1, and the guide rod 52 passes through the guide sleeve 51 and is fixedly connected to the top of the upper section of the positioning column 2.

[0034] In the above technical solution, the outer wall of the positioning base 1 is provided with four positioning bosses 6 evenly distributed in a circle. Each positioning boss 6 has a threaded hole. The height of the positioning boss 6 is 5 mm to 15 mm, and the diameter of the positioning boss 6 is 0.3 to 0.5 times the outer diameter of the positioning base 1. The inner wall of the positioning base 1 is provided with a cylindrical guide groove that cooperates with the upper part of the positioning post 2. The depth of the guide groove is 2 mm to 8 mm.

[0035] Furthermore, in the above technical solution, the upper section of the positioning post 2 is provided with at least three longitudinal guide grooves that are evenly spaced in a circle. The depth of the longitudinal guide grooves is 1 mm to 3 mm, and the width of the longitudinal guide grooves is 2 mm to 6 mm. The lower section of the positioning post 2 is provided with a spiral positioning pattern. The pitch of the positioning pattern is 0.5 mm to 2 mm, and the depth of the positioning pattern is 0.1 mm to 0.5 mm.

[0036] Furthermore, in the above technical solution, the adjusting screw 31 of the adjusting mechanism 3 is a precision screw with a pitch of 0.5 mm. The adjusting screw 31 is made of 45 steel and has undergone quenching treatment. The adjusting seat 32 is made of bronze. The inner wall of the adjusting seat 32 is provided with a threaded hole that matches the adjusting screw 31. The adjusting seat 32 is fixedly connected to the side wall of the positioning seat 1 by 4 bolts, which are arranged in a rectangular shape.

[0037] Furthermore, in the above technical solution, the locking block 42 of the locking mechanism 4 has a wedge-shaped structure, the wedge angle of the locking block 42 is 30 degrees to 60 degrees, and the material of the locking block 42 is aluminum alloy; the head of the locking bolt 41 is provided with a hexagonal operating part, the locking bolt 41 and the locking block 42 are connected by an M8 thread, and the locking bolt 41 is sealed by a rubber sealing ring when it passes through the side wall of the positioning seat 1.

[0038] Furthermore, in the above technical solution, the guide sleeve 51 of the guide mechanism 5 is a cylindrical structure, the inner diameter of the guide sleeve 51 is 0.02 mm to 0.05 mm larger than the outer diameter of the guide rod 52, and the material of the guide sleeve 51 is stainless steel; the surface of the guide rod 52 is chrome-plated, and the guide rod 52 is connected to the top of the upper section of the positioning column 2 by a thread, and an anti-loosening washer is provided at the connection.

[0039] Furthermore, in the above technical solution, the bottom surface of the positioning base 1 is provided with an annular groove, the depth of which is 2 mm to 5 mm and the width of which is 3 mm to 8 mm.

[0040] Furthermore, in the above technical solution, the step surface of the positioning post 2 is conical, and the cone angle of the conical step surface is 45 degrees to 75 degrees.

[0041] Furthermore, in the above technical solution, the outer surface of the adjustment seat 32 is provided with heat dissipation fins, which are radially distributed and the number of heat dissipation fins is 6 to 12.

[0042] Furthermore, in the above technical solution, the outer wall of the guide sleeve 51 is provided with a positioning keyway, the depth of which is 1 mm to 3 mm and the width of which is 4 mm to 8 mm.

[0043] The following is a specific embodiment of this utility model: In this embodiment, the positioning base is made of 45# steel, with an outer diameter of 80 mm, an inner diameter of 50 mm, and a height of 120 mm. A circular through-hole with a diameter of 30 mm is opened on the bottom surface. Four positioning bosses are provided on the outer wall of the positioning base, each with a height of 8 mm and a diameter of 30 mm. M6 threaded holes are opened on the positioning bosses, and the four positioning bosses are evenly distributed at 90 degrees around the circumference. A cylindrical guide groove is provided on the inner wall of the positioning base, with a depth of 5 mm and a width of 52 mm, forming an H7 / g6 fit with the upper section of the positioning post. The positioning post is made of 40Cr material and has undergone heat treatment. Its total length is 100 mm, the upper section has a diameter of 50 mm and a length of 60 mm, and the lower section has a diameter of 25 mm and a length of 40 mm. Six longitudinal guide grooves are provided on the surface of the upper section, each with a depth of 2 mm and a width of 4 mm, with a groove spacing of 60 degrees. The lower column surface features a spiral positioning pattern with a pitch of 1 mm, a depth of 0.3 mm, and three spiral lines. The stepped surface is conical with a cone angle of 60 degrees and a surface roughness of Ra0.8. The adjusting screw of the adjusting mechanism is a precision ball screw made of 45# steel, hardened to HRC58-62, with a pitch of 0.5 mm, a diameter of 12 mm, and a length of 80 mm. The adjusting seat is made of ZCuSn10P1 bronze, with an outer diameter of 40 mm, an inner diameter of 12 mm, and a height of 30 mm. The inner wall has threaded holes that mate with the adjusting screw, with a thread precision of 6H grade. The adjusting seat is fixedly connected to the positioning seat body by four M6 bolts made of high-strength alloy steel, with a connection torque of 8 Nm. The locking block of the locking mechanism is made of 6061 aluminum alloy, with a wedge angle of 45 degrees, a length of 25 mm, a width of 15 mm, a height of 10 mm, and a surface roughness of Ra0.4. The locking bolt is made of stainless steel, with a specification of M8×30, and a hexagonal operating part on the head, with a distance between opposite sides of 13 mm. The rubber sealing ring is made of nitrile rubber, with an inner diameter of 8 mm, an outer diameter of 16 mm, and a thickness of 4 mm. The guide sleeve of the guide mechanism is made of 304 stainless steel, with an inner diameter of 8 mm, an outer diameter of 16 mm, and a length of 40 mm. The inner wall surface is precision ground, with a surface roughness of Ra0.2. The guide rod is made of 45# steel, with a diameter of 8 mm, a length of 60 mm, a chrome plating layer thickness of 15 microns, and a hardness of HRC60 or higher. The guide rod and the positioning post are connected by an M6 thread, and an elastic washer is installed at the connection to prevent loosening. The entire device boasts a positioning accuracy of ±0.002 mm, a repeatability of ±0.001 mm, a maximum locking force of 5000 Newtons, and a service life exceeding 1 million operating cycles. It operates normally within an ambient temperature range of -20℃ to 80℃, making it suitable for various mold manufacturing and usage environments.During operation, each rotation of the adjusting screw produces a displacement of 0.5 mm. Micrometer-level adjustment precision can be achieved by controlling the rotation angle, with an adjustment torque of less than 2 Nm, making operation easy. During locking, the rotation of the locking bolt amplifies the locking force through a wedge mechanism. A locking torque of 15 Nm can generate a locking force of 5000 Nm, ensuring high locking reliability. The precise fit of the guide mechanism ensures the linearity of the positioning column's movement, with a straightness error of less than 0.01 mm, providing a reliable guarantee for high-precision positioning. The material selection and heat treatment processes for each component ensure the device's service life and stability, meeting the stringent requirements of modern mold manufacturing for high-precision positioning.

[0044] Specifically, the principle of this utility model is as follows: This device establishes a stable positioning benchmark through the precise cooperation between the positioning seat and the positioning column. The stepped structure design of the positioning column allows the upper section to undertake the guiding and adjustment functions, while the lower section undertakes the final positioning function, achieving effective separation of functions. The adjustment mechanism adopts the precision screw drive principle, converting the rotational motion of the screw into the linear motion of the positioning column, achieving micro-adjustment. The 0.5 mm pitch design results in a 0.5 mm displacement per revolution, and micron-level adjustment accuracy can be achieved by controlling the rotation angle. The locking mechanism adopts the wedge self-locking principle. The wedge locking block moves towards the positioning column under the action of the locking bolt, utilizing the geometric characteristics of the wedge to generate amplified locking force. The wedge angle design of 30 to 60 degrees ensures good self-locking performance and locking force transmission efficiency. The guiding mechanism ensures the linearity of movement through the precise cooperation between the guide sleeve and the guide rod. The 0.02 mm to 0.05 mm clearance design ensures both guiding accuracy and avoids increased frictional resistance caused by excessive tightness. The selection of materials for each component fully considers the performance requirements. The 45 steel adjusting screw, after quenching, has good hardness and wear resistance. The bronze adjusting seat has good wear resistance and self-lubrication. The aluminum alloy locking block is lightweight and high-strength. The stainless steel guide sleeve is corrosion-resistant and wear-resistant. The chrome-plated guide rod has high surface hardness and low coefficient of friction. The coordinated cooperation of each component achieves high-precision and high-reliability positioning function.

[0045] The specific operation or use method of this utility model is as follows: First, the positioning device is connected to the mold base via the positioning boss on the outer wall of the positioning seat. The threaded hole on the positioning boss is then used to bolt the device to the mold base, ensuring a secure and reliable connection. Next, the mold component to be positioned is placed on the lower section of the positioning column. The spiral positioning texture on the surface of the lower section of the column forms a reliable positioning fit with the mold component. Then, precision adjustment is performed using the adjustment mechanism. Rotating the adjustment screw causes its end to push the upper section of the positioning column, achieving a slight up-and-down movement of the positioning column, thereby adjusting the precise position of the mold component. During the adjustment process, the positioning accuracy can be monitored using measuring tools, and repeated adjustments are made until the required accuracy is achieved. After adjustment, the locking mechanism is activated. Rotating the locking bolt moves the locking block towards the positioning column, reliably locking the positioning column using the self-locking principle of the wedge structure to prevent displacement during subsequent use. The entire operation is simple and convenient, requiring no professional skills; ordinary operators can master it. During use, the guide mechanism automatically functions, ensuring the linearity and accuracy of the positioning column's movement without manual intervention.

Claims

1. A positioning device for a mold, characterized in that, include: The system comprises a positioning base, a positioning post, an adjusting mechanism, a locking mechanism, and a guiding mechanism. The positioning base is a hollow cylindrical structure with a bottom surface and a circular through hole. The positioning post is slidably connected to the positioning base through the circular through hole. The positioning post is a stepped cylindrical structure, consisting of an upper post and a lower post. The diameter of the upper post is larger than that of the lower post, forming a stepped surface between them. The adjusting mechanism includes an adjusting screw and an adjusting seat, with the adjusting seat fixedly mounted on the side wall of the positioning base. The adjusting screw passes through the adjusting seat and extends into the interior of the positioning seat. The end of the adjusting screw abuts against the side wall of the upper section of the positioning column. The locking mechanism includes a locking bolt and a locking block. The locking block is located inside the positioning seat. The locking bolt passes through the side wall of the positioning seat and is threadedly connected to the locking block. The inner side of the locking block fits against the outer wall of the upper section of the positioning column. The guiding mechanism includes a guide sleeve and a guide rod. The guide sleeve is fixedly located at the top of the positioning seat. The guide rod passes through the guide sleeve and is fixedly connected to the top of the upper section of the positioning column.

2. The positioning device for a mold according to claim 1, characterized in that, The outer wall of the positioning base is provided with four positioning bosses evenly distributed in a circle. Each positioning boss has a threaded hole. The height of the positioning boss is 5 mm to 15 mm, and the diameter of the positioning boss is 0.3 to 0.5 times the outer diameter of the positioning base. The inner wall of the positioning base is provided with a cylindrical guide groove that mates with the upper section of the positioning column. The depth of the guide groove is 2 mm to 8 mm.

3. The positioning device for a mold according to claim 2, characterized in that, The upper section of the positioning post is provided with at least three longitudinal guide grooves that are evenly spaced in a circle. The depth of the longitudinal guide grooves is 1 mm to 3 mm and the width of the longitudinal guide grooves is 2 mm to 6 mm. The lower section of the positioning post is provided with a spiral positioning pattern on its surface. The pitch of the positioning pattern is 0.5 mm to 2 mm and the depth of the positioning pattern is 0.1 mm to 0.5 mm.

4. The positioning device for a mold according to claim 3, characterized in that, The adjusting screw of the adjusting mechanism is a precision screw with a pitch of 0.5 mm. The adjusting screw is made of 45 steel and has been hardened. The adjusting seat is made of bronze. The inner wall of the adjusting seat is provided with threaded holes that cooperate with the adjusting screw. The adjusting seat is fixedly connected to the side wall of the positioning seat by 4 bolts, which are arranged in a rectangular pattern.

5. A positioning device for a mold according to claim 4, characterized in that, The locking block of the locking mechanism has a wedge-shaped structure with a wedge angle of 30 to 60 degrees. The material of the locking block is aluminum alloy. The head of the locking bolt is provided with a hexagonal operating part. The locking bolt and the locking block are connected by an M8 thread. When the locking bolt passes through the side wall of the positioning seat, it is sealed by a rubber sealing ring.

6. A positioning device for a mold according to claim 5, characterized in that, The guide sleeve of the guide mechanism is a cylindrical structure. The inner diameter of the guide sleeve is 0.02 mm to 0.05 mm larger than the outer diameter of the guide rod. The guide sleeve is made of stainless steel. The surface of the guide rod is chrome-plated. The guide rod is connected to the top of the upper section of the positioning column by a thread, and an anti-loosening washer is provided at the connection.

7. A positioning device for a mold according to claim 6, characterized in that, The bottom surface of the positioning base is provided with an annular groove, the depth of which is 2 mm to 5 mm and the width of which is 3 mm to 8 mm.

8. A positioning device for a mold according to claim 7, characterized in that, The step surface of the positioning post is conical, and the cone angle of the conical step surface is 45 degrees to 75 degrees.

9. A positioning device for a mold according to claim 8, characterized in that, The outer surface of the adjustment seat is provided with heat dissipation fins, which are radially distributed and number from 6 to 12.

10. A positioning device for a mold according to claim 9, characterized in that, The outer wall of the guide sleeve is provided with a positioning keyway, the depth of which is 1 mm to 3 mm and the width of which is 4 mm to 8 mm.

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